Railroad-spike.



G. K. HOFF.

RAILROAD SPIKE. APPLIUATION FILED 00T.24,1907.

Patented Mar. 23, 1909.

' l() iinii 11, oiioh iiiiving nniisiiiniiiiiii' piii'iiiioi i sitios, zinfi tho tn'o Shiiniis honig: iiisposoii piiri RAILROA DJSPKE Tool!y whom it 'may cojrwernf: i Be itknown tiii'it l, Gnomi?. ix. .Hong ii,

citizen of the Ui'iiteii States, :ind ii. resident oi'y Phiiiideipiiiii, in the oonnt)r oi Piiiiiidoipiiiii ancl'Stiito of Ponnsyiviiniii., inivo iiivoi'itmi ii. now :incl niprovod iiiiiimiihSpiiio. oi' ii'iiirii the ,following is fi inii, oiezii, anni oxiicif iw soription.

The. objoifts oi' my invention :iro to so i'oriii the portion mtornioiinito the two shiinis tiiiit it will out into tho woodI to :so i'orin tho heini that tho spike niziy bo rciiiiiiy wiiiiiiiriin'n, :ind to so forni tho points of tho siiiiiiii iiioiiihors,I :is to Aiziciiitiitov the driving' oi tiio spiko sind to prevent its occidental 'ivitiiilriin'oi Roi'oronco t0 ho inni to tho siccoiiipiinying drawings, forming ii piirt of this spooiiiriition in which siniiiiir chiiriioivro oi" rci'oroiiro indioiite corresponding ports in. iii tiio iigiu'cs, :ind in iviiicii-u Fignro 1 is fi sido oioifiition oi :i riiihoiiii ,spike constrnirioii in iicroriiiinro with iiiy in- Vontion finti x iion'nig; :i portion oi` ii riiiiroiiii 1 mii :inni tio in section; ifig. 2 is ii. vorlioiii section through tho spiko, sind sootioii boing;A taken at iippioxiniiitoiy i'iio` lino 2MB oil Fig. 3; und Fig. in is :i poi'.-:po(-tivo View oil iiio spike.

My iml'irovoii spiiio invoivon in iii; ron-l strniftion two mpiiizito iinii iiisiinri, siiiinhs iiiioi to oooh otiior. (ino siiiini; is pi'oi'oriiibi) somewhat. longer ihiiii tho oiiior, iiiiii 0in-Ii ,shank is providod with n oiiiiroi riiiiiini; mig),

to fiioiiitzito tho driving oi.' Llio rrpiiii into iiio tio. iiicii oi tho ciiiwi miglio iios iii ino plinio oi.' one snio oi' tho oorrosponiinii; iiiinii, iiiii.

i in* iin-thing odge oi' tho siiorizor shrink l i ii: on iiio sido towzirii tho shrink lo, iiiiii tin` rotting' i Oligo of the Sininii i() if; on iiiL` sirio :iwiiy iroiii the siiiink 1].

'ends of this edge, that is, the` po rtionb' iioiirost Specification oi Letters Patent.

'i`iio two Siiiiiiiiri iiro ioinio'i.- i od togothor hy :i hrnigo portion l2, rinvii iiilEiitontel March 23, .i90-ff).

Application filed Gctober 24, 1907. Serial No. 398,913.

tho two siiiiiiiis', oxioni iioiiror to Liio points oi tho shi'iiii-ls tiisin iioos tin` ririiior portion,

n'iiitii `niiovfiiiiif gli-minor iiiiin iiio iiiiiiiniils i'nii ioiigiii oiA tho iiriaigo poriioii inni zirrosr:

iiioy iippor oinin oil iioiii riiiiiniis. 'i`lio heini i iiirliiiioy :i iaitoriiiiyoiiionriing siioniiioiif'i,

i tho iunior :siiio oiniin'ii i5 spiiroii :i iiisiiiinro i :iii/,ivo iin fniiiiig; migo ii soiiioniizit giji'oiiior tiiiii'i iiio iiiiriiiioss oi iiio hin-.ii iiiingio oi' ii riiiirozni riiii. 'i`iio iiiini is niiiiorifiit :ioross tiio iirii o portion i! :iiongy :i iiiio iiniisiziiiiiiiiiy @von niiii iinx iiinior sirio oi' tiio siioniiior l?. in, nso, iii'v iniprovoii sipiiio is iiriwn into tho iio io sniisiiniiiiiijr thii position :shown in i oppor oiijgjo oil (ho immo iiiingi oil tho riiii [o i hohl tho iiiLtor sooni'oiy in phiro. o'hiio tho rotting migo Il; oi Liio iirnigo poriion i2 niniis into iii(` nppor snriiiro oi' ihr tio i'or :i short (iiiaiiiiiim. iiiiioriii iiirnrst oii tho Hpiioi is rooien/wl not oni)Y hy iiii` i'iiii urozir; ,Qootioiiiii ziroii oiiiotii shrinks., init iiiso lo' tho i'nii irons :ziiationzii :iron oi tiio iiiiiigo portion i2, :i ilio riiii ontw-.IH wiiii tho siiiinii i() in iiiinonioni. wit li tho f iiii oi.' tho iiriiigo portion. i\iii"iinlg1` oi' iiio npiiio h i' ihr r:iii if: proviiiwi, iis; ovoii iiioiifgli iiiil iiiiinfgii'iiii nonhi tomi lo iooson i iinl iiiiiiiii U), il` iii/croi)y loiiiis io iianfi iho riiizini: il iinii iiolii iho irziiin ovoii iirnirir wihii liii iio. Winni iiisiriri. tho spiiw niiir iir i'iiiiiii)y niiiniriiivn, :in :i iooi iiiii.)v ho l iiiiiiiii iiciioiiii tin` wig-o oi' iiio iioiiil :it :i poiiii4 iiiirAi-eiioiiiiiii th'.` ino iiininks. iioiii oi" lin siiziniir: iii-ing; sniirfiziiiiiiiiiif p: iiiiioi, roii'iprima' ihf' o'ooii iiiiir iin'roiioiii'ovii. inni rony (iur i Eni ioowiiiiig oiA ho :spiini: ions iiiiiiio iiiziii g \r:= iii-:n iiiiviiij; :i rsiiipgio siiiiiiii( oinpioyiii. ,'i`iir iiiiiiif .:iii iiiiii.' piiixilii-i siiios oi'v viii-.ii siiiiiiii i'viiiior iiio :aiiiink iwi: iiiiiiii. io iiiii.,iiiiii!;;l iiizin \\oi:i l riiaiiiiiii; topi-rmi throughout ilfsiongfiii. i ii i nomi iiiiit spiiios lnivo` iivoii Irviiioil i in iin-ii iiiii'o non proliiioii :i Spin' iii; iin r/iir :'.ilo oi' iiniiiiiiiiiy :inii iiiizipioii lo viiiir iin` lio to :ii-t :isl :i or-.iro io iiio iiiiiin iioii)y oi' iiio iiii i,`iiiii ziav i':ii :iny i\no\.\'n iiiiso spin-s iizivo hooii oi' iiiliio or no viiino, iniisnnirh :is i iin. i'iioriiio'io pioxsni'o iippiioii to tho tio :it lii iiiiif` i: iaoin potions ovvi' liiio riiiis, (zinloos ii .'iiiligiit iiriiiiinpj oiI iiio tir, :i portion oi which iioinliiijg; omini-fi iiitn'orin tiii i iiiiiiiinni tho oni'. 'Vinl poiiitmi iizitnrooi"tho:ipnrooiinsxoo iniii to innii'ziiiiiisiy work ioono inni to sorvo i i i iii riirrt :is :i pr)Y woiitninonsij,Y irinhii; lio iiooson tho iiiiini spo-1o; iii 'i":tot, spikes pro- 'l oo vided with these spurs loosen for quicker' than does the ordinary and common form of spike'. Furthermore, spikes of the cha-meter :tbove referred to have the bridge portion thereof spaeed above the tie, so that the shearing efl'eet is resisted almost entirely by the main spike, and whereby a slight bending of the spike Causes a movement of the spur in respect to the bod)Y of the spike :1nd a. loosening of the spur. All of these qualities have been overcome in my spike.

Having thus deseri )ed my invention, l

l claim es new and desire to secure by Letters Patent: v

A spike having two parallel shnnks of different length, each of uniform cross section throughout the nmjor portion of its length and eet-.h h erin; `one straight side and having the opposite side pr rallel thereto :uid termi- 20 nat/ingl in n beveled vSurface, the beveled surfaces of the two Shanks being at substantially the saine angle ond `upon the corresponding sides and in substantiallyY the saine plane, a connecting* portion between said Shanks at their upper endsnand'oonvex on its under side end. terminating in s depending curved cutting edge, and :t head extending across the upper ends oi seid Shanks and said oonneeting' portion, seid head being of great-er width than seid Shanks and having :in out- \vfu'(lly-e te1nlingq shoulder adjacent the upper end of the longer shank.

In testi1nonr whereof I have signed my naine to this specification in the presence of two subscribing` Witnesses.

GEORGE K. HOFF.

Yitnesses S. Vv'. FoULKRoD, GEORGE K. HOFF, Jr. 

